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QRZ! Ham Radio 6
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QRZ Ham Radio Callsign Database - Volume 6.iso
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rhinosrc.lha
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asy.c
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C/C++ Source or Header
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1992-05-15
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3KB
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141 lines
/* Generic serial line interface routines
* Copyright 1992 Phil Karn, KA9Q
*/
#include <stdio.h>
#include "global.h"
#include "proc.h"
#include "iface.h"
#include "netuser.h"
#include "slhc.h"
#include "n8250.h"
#include "asy.h"
#include "ax25.h"
#include "kiss.h"
#include "nrs.h"
#include "pktdrvr.h"
#include "slip.h"
#include "ppp.h"
#include "commands.h"
static int asy_detach __ARGS((struct iface *ifp));
/* Attach a serial interface to the system
* argv[0]: hardware type, must be "asy"
* argv[1]: I/O address, e.g., "0x3f8"
* argv[2]: vector, e.g., "4"
* argv[3]: mode, may be:
* "slip" (point-to-point SLIP)
* "ax25" (AX.25 frame format in SLIP for raw TNC)
* "nrs" (NET/ROM format serial protocol)
* "ppp" (Point-to-Point Protocol, RFC1171, RFC1172)
* argv[4]: interface label, e.g., "sl0"
* argv[5]: receiver ring buffer size in bytes
* argv[6]: maximum transmission unit, bytes
* argv[7]: interface speed, e.g, "9600"
* argv[8]: optional flags,
* 'v' for Van Jacobson TCP header compression (SLIP only,
* use ppp command for VJ compression with PPP);
* 'c' for cts flow control
* 'r' for rlsd (cd) detection
*/
int
asy_attach(argc,argv,p)
int argc;
char *argv[];
void *p;
{
register struct iface *ifp;
int dev;
int trigchar = -1;
int cts,rlsd;
struct asymode *ap;
int vj;
char *cp;
if(if_lookup(argv[4]) != NULLIF){
printf("Interface %s already exists\n",argv[4]);
return -1;
}
/* Find unused asy control block */
for(dev=0;dev < ASY_MAX;dev++){
if(Asy[dev].iface == NULLIF)
break;
}
if(dev >= ASY_MAX){
printf("Too many asynch controllers\n");
return -1;
}
/* Create interface structure and fill in details */
ifp = (struct iface *)callocw(1,sizeof(struct iface));
ifp->addr = Ip_addr;
ifp->name = strdup(argv[4]);
ifp->mtu = atoi(argv[6]);
ifp->dev = dev;
ifp->stop = asy_detach;
if(argc > 8 && strchr(argv[8],'v') != NULLCHAR)
vj = 1;
else
vj = 0;
/* Look for the interface mode in the table */
for(ap = Asymode;ap->name != NULLCHAR;ap++){
if(stricmp(argv[3],ap->name) == 0){
trigchar = uchar(ap->trigchar);
if((*ap->init)(ifp,vj) != 0){
printf("%s: mode %s Init failed\n",
ifp->name,argv[3]);
if_detach(ifp);
return -1;
}
break;
}
}
if(ap->name == NULLCHAR){
printf("Mode %s unknown for interface %s\n",
argv[3],argv[4]);
if_detach(ifp);
return -1;
}
/* Link in the interface */
ifp->next = Ifaces;
Ifaces = ifp;
cts = rlsd = 0;
if(argc > 8){
if(strchr(argv[8],'c') != NULLCHAR)
cts = 1;
if(strchr(argv[8],'r') != NULLCHAR)
rlsd = 1;
}
asy_init(dev,ifp,argv[1],argv[2],(int16)atol(argv[5]),
trigchar,(int16)atol(argv[7]),cts,rlsd);
cp = if_name(ifp," tx");
ifp->txproc = newproc(cp,768,if_tx,0,ifp,NULL,0);
free(cp);
return 0;
}
static int
asy_detach(ifp)
struct iface *ifp;
{
struct asymode *ap;
if(ifp == NULLIF)
return -1;
asy_stop(ifp);
/* Call mode-dependent routine */
for(ap = Asymode;ap->name != NULLCHAR;ap++){
if(ifp->iftype != NULLIFT
&& stricmp(ifp->iftype->name,ap->name) == 0
&& ap->free != NULLFP){
(*ap->free)(ifp);
}
}
return 0;
}